The seated soldier study: posture and body shape in vehicle seats

Show simple item record Reed, Matthew P. en_US Ebert, Sheila M. en_US 2014-12-19T17:42:07Z NO_RESTRICTION en_US 2014-12-19T17:42:07Z 2013-10-31
dc.identifier Accession Number: 103143 en_US
dc.identifier.other UMTRI-2013-13 en_US
dc.identifier.other Contract Number W56HZV-04-2-0001 P00038 en_US
dc.description Dates covered (From - To) September 2011- October 2013 en_US
dc.description Final Report en_US
dc.description.abstract Designing vehicles for the safety and comfort of occupants requires detailed information on posture, position, and body shape. This report presents the methods and results of a study of soldiers as drivers and passengers in vehicle seats. A total of 257 male and 53 female soldiers were measured at three Army posts while minimally clad, wearing the Advanced Combat Uniform (ACU), with the addition of personal protective equipment (PPE), composed of the Improved Outer Tactical Vest (IOTV) and Advanced Combat Helmet (ACH), and with encumbrance (ENC) simulating the gear of either a rifleman or SAW-gunner. Standard anthropometric data, such as stature and body weight, were recorded. Participants were measured as either drivers or crew. Five driver workstation configurations (packages) were produced in a vehicle mockup by varying the steering wheel position relative to the pedals. The participants adjusted the seat to obtain a comfortable driving posture. The three-dimensional locations of body landmarks were measured using a FARO Arm coordinate digitizer. In the crew conditions, the experimenters varied the seat height and back angle and conditions included a simulated protective footrest. A whole-body laser scanner was used to record body shape at each garb level. A statistical analysis of the body landmark data was conducted to obtain models to predict soldier posture as a function of vehicle factors, such as seat height, and soldier attributes, such as stature, and garb level (ACU, PPE, or ENC). Driver posture was strongly affected by steering wheel position and crew posture by seat back angle. Adding PPE and ENC resulted in more-upright postures, but the effects on spine posture were small. Statistical models of both seated and standing body shape were developed from the scan data, including the effects of PPE and ENC on space claim. The effects of ENC on space claim were largely independent of body size. The results of this study have broad applicability for the design and assessment of military vehicles. Approved for public release. en_US
dc.description.sponsorship US Army Tank Automotive Research, Development, and Engineering Center en_US
dc.format.extent 120 en_US
dc.language English en_US
dc.publisher University of Michigan, Ann Arbor, Transportation Research Institute en_US
dc.subject.other Anthropometry en_US
dc.subject.other Posture en_US
dc.subject.other Vehicle Occupants en_US
dc.subject.other Drivers en_US
dc.subject.other Vehicle Safety en_US
dc.title The seated soldier study: posture and body shape in vehicle seats en_US
dc.subject.hlbsecondlevel Transportation
dc.subject.hlbtoplevel Engineering
dc.description.filedescription Description of 103143.pdf : Final Report
dc.owningcollname Transportation Research Institute (UMTRI)
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